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<title>Problem 2332. -- [SCOI2011]植物大战僵尸 -- 衡阳八中OJ离线版-2012-02-29</title><center><h2>2332: [SCOI2011]植物大战僵尸</h2><span class=green>Time Limit: </span>40 Sec&nbsp;&nbsp;<span class=green>Memory Limit: </span>128 MB<br><span class=green>Submit: </span>24&nbsp;&nbsp;<span class=green>Solved: </span>8<br>[<a href='submitpage.php?id=2332'>Submit</a>][<a href='problemstatus.php?id=2332'>Status</a>][<a href='bbs.php?id=2332'>Discuss</a>]</center><h2>Description</h2><div class=content><div class="Section0" style="layout-grid:  15.6pt none">
<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 21pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">坚果保龄球是植物大战僵尸中的一个小游戏。现在疯狂戴夫只给了<font face="Times New Roman">lxhgww</font><font face="宋体">一些最普通的坚果，让</font><font face="Times New Roman">lxhgww</font><font face="宋体">像保龄球一样把坚果扔出去，砸死院子里的僵尸。</font></span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 21pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">院子一共由<font face="Times New Roman">N</font><font face="宋体">条轨道组成，从上到下依次编号从</font><font face="Times New Roman">1</font><font face="宋体">到</font><font face="Times New Roman">N</font><font face="宋体">，每条轨道又被分成若干格。院子里一共有</font><font face="Times New Roman">M</font><font face="宋体">只僵尸，每只僵尸站在某个格子内，并且可以认为它的位置不会变化。游戏可以分成</font><font face="Times New Roman">K</font><font face="宋体">个回合，在每个回合中，你可以选择一条轨道，把一个坚果扔出去。被扔出去的坚果首先会沿着轨道直线的从左往右滚动，直到撞到第一只僵尸之后，它开始沿着</font><font face="Times New Roman">45</font><font face="宋体">度的斜线滚动，并且向中心的一侧滚动（即前</font><font face="Times New Roman">N/2</font><font face="宋体">行的向右下滚动，后</font><font face="Times New Roman">N/2</font><font face="宋体">行的向右上滚动，题目保证</font><font face="Times New Roman">N</font><font face="宋体">是偶数）。院子的两边是围墙。斜着走的坚果撞到围墙或者僵尸会反弹，即从往右上走变成往右下走，或者反过来。直到坚果不再能打到任何僵尸之后，该回合结束。注意：多只僵尸可能站在同一格，这个时候坚果每次只会撞死该格子的其中一只僵尸。</font></span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 21pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">为了砸死尽量多的僵尸，现在<font face="Times New Roman">lxhgww</font><font face="宋体">决定在每回合的开始，选择在当前情况下可以砸死最多僵尸的一条路线扔出坚果。在出现相同的情况时，他会选择编号最小的轨道扔出。为了了解这个做法的效果，现在</font><font face="Times New Roman">lxhgww</font><font face="宋体">需要你帮助他计算这个方法可以砸死的僵尸数目。</font></span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 20.25pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
</div>
<!--EndFragment--></div><h2>Input</h2><div class=content><p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 20.25pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">输入的第一行有<font face="Times New Roman">3</font><font face="宋体">个整数，</font><font face="Times New Roman">N</font><font face="宋体">，</font><font face="Times New Roman">M</font><font face="宋体">，</font><font face="Times New Roman">K</font><font face="宋体">。</font></span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 20.25pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">接下来<font face="Times New Roman">M</font><font face="宋体">行，每行两个整数</font><font face="Times New Roman">X</font></span><span style="font-size: 10.5pt; vertical-align: sub; font-family: 'Times New Roman'; mso-spacerun: 'yes'">i</span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">,&nbsp;Y</span><span style="font-size: 10.5pt; vertical-align: sub; font-family: 'Times New Roman'; mso-spacerun: 'yes'">i</span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">，表示第<font face="Times New Roman">i</font><font face="宋体">个僵尸位于第</font><font face="Times New Roman">Y</font></span><span style="font-size: 10.5pt; vertical-align: sub; font-family: 'Times New Roman'; mso-spacerun: 'yes'">i</span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">条轨道，从左数第<font face="Times New Roman">X</font></span><span style="font-size: 10.5pt; vertical-align: sub; font-family: 'Times New Roman'; mso-spacerun: 'yes'">i</span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">个格子中。</span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p></div><h2>Output</h2><div class=content><p class="p0" style="margin-top: 0pt; margin-bottom: 0pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span>&nbsp;</p>
<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 20.25pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">输出数据包括<font face="Times New Roman">K+1</font><font face="宋体">行。</font></span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 20.25pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">前<font face="Times New Roman">K</font><font face="宋体">行，每行</font><font face="Times New Roman">2</font><font face="宋体">个数据</font><font face="Times New Roman">A</font></span><span style="font-size: 10.5pt; vertical-align: sub; font-family: 'Times New Roman'; mso-spacerun: 'yes'">i</span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">,&nbsp;B</span><span style="font-size: 10.5pt; vertical-align: sub; font-family: 'Times New Roman'; mso-spacerun: 'yes'">i</span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">，表示在第<font face="Times New Roman">i</font><font face="宋体">个回合，从第</font><font face="Times New Roman">A</font></span><span style="font-size: 10.5pt; vertical-align: sub; font-family: 'Times New Roman'; mso-spacerun: 'yes'">i</span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">条轨道扔出坚果，这个坚果在运行过程中打到了<font face="Times New Roman">B</font></span><span style="font-size: 10.5pt; vertical-align: sub; font-family: 'Times New Roman'; mso-spacerun: 'yes'">i</span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">个僵尸。</span><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'"><o:p></o:p></span></p>
<p class="p0" style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 20.25pt"><span style="font-size: 10.5pt; font-family: 'Times New Roman'; mso-spacerun: 'yes'">最后一行是一个数字，表示被打到的僵尸总数。</span></p></div><h2>Sample Input</h2>
			<div class=content><span class=sampledata><br />
<br />
4 2 1<br />
<br />
1 2<br />
<br />
5 2<br />
<br />
</span></div><h2>Sample Output</h2>
			<div class=content><span class=sampledata><br />
2 2<br />
<br />
2<br />
</span></div><h2>HINT</h2>
			<div class=content><p><p>【数据范围】</p><br />
<p>对于20%的数据，保证： N&lt;=200，M&lt;=500，K&lt;=200，Xi&lt;=200；</p><br />
<p>对于50%的数据，保证： N&lt;=200，M&lt;=200000，K&lt;=200，Xi&lt;=1000000；</p><br />
<p>对于100%的数据，保证： N&lt;=20000，M&lt;=200000，K&lt;=100000，Xi&lt;=1000000；</p><br />
<p>对于所有的数据，保证：1&lt;=Yi&lt;=N<br /><br />
</p></p></div><h2>Source</h2>
			<div class=content><p><a href='problemset.html?search=Day1'>Day1</a></p></div><center>[<a href='submitpage.php?id=2332'>Submit</a>][<a href='problemstatus.php?id=2332'>Status</a>][<a href='bbs.php?id=2332'>Discuss</a>]</center>﻿<br>

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